[INFO] fetching crate rc_event_queue 0.4.2...
[INFO] checking rc_event_queue-0.4.2 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate rc_event_queue 0.4.2 into /workspace/builds/worker-19/source
[INFO] validating manifest of crates.io crate rc_event_queue 0.4.2 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rc_event_queue 0.4.2
[INFO] finished tweaking crates.io crate rc_event_queue 0.4.2
[INFO] tweaked toml for crates.io crate rc_event_queue 0.4.2 written to /workspace/builds/worker-19/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
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[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]  Downloading crates ...
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[INFO] [stderr]   Downloaded compiletest_rs v0.7.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 35cd924e02c8c2a6659a2e32cf411f5b0de24f7f7a1fd3c145fd892586028b3e
[INFO] running `Command { std: "docker" "start" "-a" "35cd924e02c8c2a6659a2e32cf411f5b0de24f7f7a1fd3c145fd892586028b3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "35cd924e02c8c2a6659a2e32cf411f5b0de24f7f7a1fd3c145fd892586028b3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35cd924e02c8c2a6659a2e32cf411f5b0de24f7f7a1fd3c145fd892586028b3e", kill_on_drop: false }`
[INFO] [stdout] 35cd924e02c8c2a6659a2e32cf411f5b0de24f7f7a1fd3c145fd892586028b3e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 849ecaaa4a700d85e93628f12307db0f5a37f843ddba89edd2bcfef1ddcd4d84
[INFO] running `Command { std: "docker" "start" "-a" "849ecaaa4a700d85e93628f12307db0f5a37f843ddba89edd2bcfef1ddcd4d84", kill_on_drop: false }`
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[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling autocfg v1.0.1
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[INFO] [stderr]     Checking rc_event_queue v0.4.2 (/opt/rustwide/workdir)
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[INFO] [stdout] warning: unused import: `std::pin::Pin`
[INFO] [stdout]  --> benches/spmc_mt_read_write_bench.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::pin::Pin;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BenchmarkId`
[INFO] [stdout]  --> benches/mt_read_bench.rs:5:61
[INFO] [stdout]   |
[INFO] [stdout] 5 | use criterion::{Criterion, criterion_group, criterion_main, BenchmarkId, black_box, BenchmarkGroup};
[INFO] [stdout]   |                                                             ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BenchmarkId`
[INFO] [stdout]  --> benches/read_empty_bench.rs:6:72
[INFO] [stdout]   |
[INFO] [stdout] 6 | use criterion::{black_box, criterion_group, criterion_main, Criterion, BenchmarkId};
[INFO] [stdout]   |                                                                        ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> tests/compile-tests.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/event_queue/test.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `List`
[INFO] [stdout]  --> src/event_queue/test.rs:8:41
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::event_queue::{foreach_chunk, List};
[INFO] [stdout]   |                                         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::BorrowMut`
[INFO] [stdout]  --> src/tests/mpmc.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::borrow::BorrowMut;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]  --> src/event_queue/test.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use rand::Rng;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Itertools`
[INFO] [stdout]  --> src/tests/mpmc.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 | use itertools::{Itertools, assert_equal};
[INFO] [stdout]   |                 ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.35s
[INFO] running `Command { std: "docker" "inspect" "849ecaaa4a700d85e93628f12307db0f5a37f843ddba89edd2bcfef1ddcd4d84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "849ecaaa4a700d85e93628f12307db0f5a37f843ddba89edd2bcfef1ddcd4d84", kill_on_drop: false }`
[INFO] [stdout] 849ecaaa4a700d85e93628f12307db0f5a37f843ddba89edd2bcfef1ddcd4d84